amazing photo of the Orion nebula's center, a cloud of gas and dust known as The work was created by Adam Block at the Mount Lemon Sky Center observatory in Arizona. Image: Adam Block/Mount Lemmon SkyCenter/University of Arizona
Black holes might end their lives by transforming into their exact opposite — 'white holes' that explosively pour all the material they ever swallowed into space, say two physicists. The suggestion, based on a speculative quantum theory of gravity, could solve a long-standing conundrum about whether black holes destroy information.
The History of Medicine - Photos and Illustrations
Cygnus A Stellar Mass Black Hole. Artist's illustration shows the black hole drawing mass from a companion blue star. The material forms a disc around the black hole before falling into it or being ejected by powerful jets.